Overloop automates sequences. It does not filter what enters them.
Overloop — formerly Prospect.io — is a multi-channel sales engagement platform that combines email sequences, LinkedIn automation, and CRM integration. Teams use it to run coordinated outreach across channels without managing each touchpoint manually.
That automation creates efficiency, but it also means that once a contact is enrolled in an Overloop sequence, the platform continues executing steps until the sequence ends or the contact is manually removed. There is no mid-sequence quality check on the list. Whatever entered at the start of the sequence runs through to the end.
This is why the quality decision belongs before import — not because Overloop fails at its job, but because its job is to automate, not to filter. The list quality decision is yours to make upstream.
Note: Overloop was acquired by Salesflare in 2023 and is no longer available as a standalone product. If you are migrating from Overloop or evaluating similar sales engagement tools, the pre-send verification principles on this page apply to any sequence-based outbound platform.
What to check before Overloop import.
Contacts in Overloop come from its built-in prospecting feature, external CSV imports, CRM integrations, and manual additions. Each source carries different quality characteristics. Before any contact enters a sequence, verify at the field level.
| Field | Why it matters |
|---|---|
| The primary delivery address — must be valid before sequence enrollment | |
| Domain | Determines catch-all behavior, MX validity, and whether the company is still operational |
| Source | Overloop prospecting, CSV import, CRM sync, manual — each source has distinct reliability characteristics |
| Suppression status | Contacts that bounced or opted out previously should not re-enter through a new import |
| List age | Contacts sourced more than 90 days ago should be re-verified before sequence enrollment |
The risk each signal type creates.
Overloop sequences run across multiple steps and can include LinkedIn touchpoints in addition to email. Understanding how each signal type affects delivery helps you decide which records should enter the sequence at all.
| Signal | Delivery behavior | Risk to Overloop sequences |
|---|---|---|
| Invalid | Permanently rejected | Hard bounce — reputation damage to sending domain |
| Catch-all | Domain accepts all addresses, mailbox uncertain | Delivery uncertainty across sequence steps — inflates bounce risk |