Cold email software
Cold email software that finds the right people first.
Most cold email tools send whatever list you give them. Siela's AI SDR starts a step earlier: it finds people with a fresh reason to buy, finds and verifies their work email, then sends your first email from your own Gmail with each person's details filled in, and follows up. The same campaign can reach them on LinkedIn and X too.
Email founders of agencies that are hiring account managers. Use my first email.
Found 30 who fit and are hiring account managers; 13 are hot. 11 of the 13 have a verified work email, and your first email goes to them today, two to five minutes apart.
11 emails today
What cold email software does
Cold email software sends first emails and follow-ups to people who haven't heard from you yet, from your own mailbox, at a pace that keeps you out of spam. The better tools also check that each address is real before sending, and stop following up the moment someone replies.
Siela's email outreach works like this:
- Finds the address. For each lead the AI SDR picks, it finds a work email and verifies it, and only emails addresses that are deliverable.
- Your first email, filled in. You write the first email once (Siela can draft it from your goal), and it fills in each person's name, company and title.
- A human pace. A Gmail mailbox sends up to 150 a day, two to five minutes apart. Email keeps working with your laptop closed.
- Follow-ups that know when to stop. AI follow-ups carry the conversation and stop when someone books, says yes, says no or asks you to stop.
- Campaigns from the CRM. Email sequences and bulk campaigns to contacts in the built-in CRM, with open and click tracking.
When a dedicated cold email tool is better
Tools like Instantly, Smartlead and lemlist are built for sending cold email at volume: many mailboxes and domains, warm-up, inbox rotation and detailed deliverability reporting. If email is your only channel and you send thousands a day, use one of those.
Siela fits a different team: one that sends fewer, better emails to people with a reason to talk, wants LinkedIn and X in the same campaign, and doesn't want to buy a list first. See our cold email templates and how long to warm up a domain either way.
Email, LinkedIn and X in one campaign
Many buyers ignore email but accept a LinkedIn request, or the other way round. The AI SDR can run all three channels for the same leads, each with its own daily goal, and every reply lands on the contact in the CRM.
How it works
Describe who to reach
Paste your website, or set roles, industries, sizes and locations.
Write your first email
Once. Siela can draft it from your goal and fills in each person's details.
Connect Gmail
Up to 150 emails a day per mailbox, two to five minutes apart.
It sends and follows up
Verified addresses only, with follow-ups that stop on a reply or a no.
CRM and booking come built in
Nothing needs buying or connecting first. The work lands in tools that come with Siela, and every agent can read and write to them from the first minute:
- CRM: contacts and companies, a visual pipeline, and every lead the AI SDR saves, with the reason it was picked.
- Calendar and booking: booking pages you can share, slots checked against every connected calendar, and reminders to both sides.
- Business memory: your brand voice, product facts, people and past work, read by every agent before it writes.
Already on HubSpot or Salesforce? You can connect them.
How it compares
| Siela AI | Cold email platforms e.g. Instantly, Smartlead, lemlist | Contact databases e.g. Apollo | |
|---|---|---|---|
| Finds the people for you | Yes, with buying signals | You bring the list | You search and filter |
| Verifies emails before sending | Yes | On some, or with an add-on | Yes, on most |
| Sending volume | Up to 150 a day per Gmail mailbox | Thousands, across many mailboxes | Varies by plan |
| LinkedIn and X in the same campaign | Yes | LinkedIn steps on some | No |
Based on each vendor's public website, October 2026. Categories describe typical products in each group; individual tools vary.
Works with the other agents
AI SDR
Finds people with a fresh reason to buy, starts the conversation on LinkedIn, X and email, and follows up.
Call Agent
Joins your Zoom, Meet or Teams call, talks with the person from your brief, and sends you a report when it ends.
Social Media
Posts, comments, replies and handles DMs on LinkedIn and X, the way you set it up.
Questions
What is cold email software?
Software that sends first emails and follow-ups to people who don't know you yet, from your own mailbox, at a pace that protects your sending reputation.
What's the best cold email software for a small business?
If email is your only channel and you send at high volume, a dedicated platform such as Instantly, Smartlead or lemlist. If you want the tool to find the right people as well, and to reach them on LinkedIn and X too, Siela fits better.
How many cold emails can Siela send a day?
Up to 150 a day per Gmail mailbox, two to five minutes apart.
Does Siela verify email addresses?
Yes. It finds each person's work email, verifies it, and only emails addresses that are deliverable.
Does it work with my laptop closed?
Email outreach does. LinkedIn and X run while the Siela desktop app is open.
Hand over the growth work.
Paste your website, check the setup and press start. You set the limits; the agents do the rest.