Bulk text marketing is decided by the quality of the list before a single message is written. Duplicates mean the same person gets two texts. Landlines mean wasted sends. Old numbers mean texts to strangers. This article answers one practical question about bulk text messaging for businesses: how do you prepare, clean and segment a contact list on the levelpartner.ai platform, then release the send in batches your team can answer, so each message reaches the right person once and you can trust the results?
Why list preparation comes first
A firm with ten years of enquiries usually holds several thousand mobile numbers in its CRM. Some are duplicates from different forms. Some were typed wrongly. Some belong to people who changed number years ago. Some were never mobiles.
Sending to that list as it stands wastes money, frustrates the people who receive two texts, and produces misleading results. A clean, consented, correctly formatted list gets delivered, read and answered; a messy one gets filtered by carriers and triggers complaints. A morning of cleaning before the first bulk send pays for itself on the first campaign.
The four problems to fix
Formatting is the first. Numbers stored without country codes, with spaces or with stray leading zeros may fail or route to the wrong country. Duplicates come second: the same person recorded twice because they used two forms.
Third, number type. Landlines cannot receive SMS, so keep them for calls and leave them out of text lists. Fourth, age. A number collected eight years ago and never used since has a real chance of belonging to someone else now.
Before you start
- Access to Contacts with permission to edit and merge records.
- A decision on your markets, so you know which country codes are valid.
- A rule for how old an unused number can be before you stop texting it.
- A backup export of your contacts before you begin any merging.
How to build a bulk-ready segment
Work through the four problems first: correct the formats, merge duplicates keeping the stricter consent status, set landlines aside and tag long-dormant contacts. Then save each audience as a smart list so the filters apply every time you send.
- Go to Contacts > Smart Lists and click + Add smart list.
- Choose a filter, such as the consent tag, from the dropdown.
- Enter the filter details and click Apply.
- Select AND to add the next filter, such as region.
- Click Create to save the smart list.
Add the exclusions to every segment: anyone marked do not disturb for SMS, anyone tagged dormant and anyone whose last text failed. A smart list without those filters will bring the problems back on the next send.
Segmenting for bulk sends
Bulk does not mean everyone. It means one message to a group large enough that you would not text each person individually. The group still needs a common reason to hear from you.
Useful segments for service firms include stage in the relationship, service bought, location and date of last contact. A smart list combining two of these, such as past clients in one region who bought more than two years ago, usually outperforms a single broad list. The SMS marketing strategy guide covers which segments to prioritise.
Say the agency starts with 7,800 contacts with a phone number. Suppose formatting fixes correct 640, merging removes 910 duplicates, 1,120 turn out to be landlines and 1,600 have had no activity in four years and are parked. That would leave a bulk-ready list of 4,170: 7,800 minus 910, 1,120 and 1,600. A clean list like that should keep delivery failures on the first send to a small number. The counts are invented for the arithmetic.
Why batching beats one big send
Sending everything in one burst looks efficient. It rarely is. If 2,000 people get the message at 10am and one in twenty replies, your team faces 100 conversations at once, and most get answered hours late. Batching releases the send in waves sized to what your team can answer.
Batching also protects delivery. A sudden spike of traffic from a single number is the pattern carriers associate with spam. Steady release at a sensible rate looks like a business talking to its customers. On the platform this is Drip Mode, chosen as the delivery method when you send the bulk SMS from Contacts.
- Go to Contacts.
- Choose the action type: Send SMS.
- Select the audience from your saved smart list.
- Under Delivery Method, choose Send in Drip Mode.
- Set Start On, Batch Quantity and Repeat After.
- Optionally set Send On, Process Between and End At.
- Add an action description so the send is easy to find.
- Review the estimated duration.
Picture 1,800 past buyers and sellers with recorded text consent, sent a market update offering a free valuation in batches of 200 every 30 minutes. If replies came in at around ten per batch, two negotiators could answer them as they arrived. Sent in one burst, the same 90 replies would land at once and queue for most of the afternoon. The reply rate is an assumption; the batching logic holds at any rate.
Keeping the list clean
Cleaning once is not enough. New duplicates appear as soon as forms start collecting again, so set forms to update existing contacts rather than create new ones, and review duplicates monthly.
Delivery failures are a signal too. After each bulk send, open Bulk Actions in Contacts, use Show Stats on the send and download the error log. Fix or remove the failing numbers before the next send.
What it replaces and the weekly time
List preparation replaces the spreadsheet clean-up someone does in a panic before a campaign. The first full clean takes half a day for a few thousand contacts. Monthly maintenance takes 20 to 30 minutes. For running the send itself, see how to run a bulk SMS campaign.
Merging duplicates without checking consent and opt-out status. If one duplicate opted out and the other did not, a careless merge can put a contact who asked to stop back on your lists. Always keep the stricter status.
When a big clean is not worth it
If your list is small and recent, collected through your own forms in the last year or two, a light check for duplicates is enough. The full process pays off for older, larger databases built from several sources. For the governance side of who may send, read mass text messaging for business.
Troubleshooting
Many texts fail to deliver. Check country codes first, then number type. A batch of failures from one region often means a formatting problem.
Contacts complain they received two texts. Duplicates remain. Search by phone number and merge, then check whether forms are creating new records instead of updating.
US recipients receive nothing. The sending number may not be registered for US texting yet. Check its registration status before sending again.
Dormant contacts keep appearing in lists. The smart list does not exclude the dormant tag. Add the exclusion to every bulk segment; affordable SMS marketing depends on this kind of filtering.
Frequently asked questions
How often should we clean our texting list?
A full clean once a year, with monthly checks for duplicates and failures. Clean again before any unusually large send.
Should we delete old contacts or keep them?
Keep them, tagged as dormant and excluded from texts. They may still be reachable by email, and deleting loses history. Your data retention policy decides when they go for good.
Can I personalise a bulk text?
Yes. Insert the contact's first name and other fields, and make sure every contact in the segment has a value in the fields you use.
Is bulk text marketing different from bulk SMS marketing?
The terms are used interchangeably. In this help centre, this article covers the list and the pacing, and the bulk SMS marketing article covers running the programme over a year.